Não informado. (1973). Index of Conference Proceedings Received. British Library, Lending Division.
Citace podle Chicago (17th ed.)Não informado. Index of Conference Proceedings Received. Boston, Inglaterra: British Library, Lending Division, 1973.
Citace podle MLA (8th ed.)Não informado. Index of Conference Proceedings Received. British Library, Lending Division, 1973.
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